Program’s Main Screen

Data Exchange between ControlLogix PLC and ControlLogix PLC

- This program exchanges two kinds of data registers:  The first type is Real Array registers and the second type is a Double Integer register (Dint).  

- The Real Registers are a Real array and consists of 2 to 50 registers.   The number of registers are defined in both PLCs and the exact number exchange is give by the ‘Array Length’ variable.  The length can be from 2 to 50 registers.  The array length shown here is for a 30 element array (0 to 29).

- The Double Integer (Dint) register is one registers that is used to transfer discrete values back and forth.  The definition of the Dint register in the ControlLogix processor is a single Dint register.  

- The bit positions are preserved for both of the ControlLogix PLCs.  

- Note: To access a Program tag array (as opposed to a Global tag array), use this format:

Program:MainProgrm.To_AB_Real